Then uploaded it to the wood tv web site, they used it for there weather back ground for a few years on and off, we thought we should get royalties.

That depends. When you upload pictures to facebook, you give them unlimited use of the pictures without remuneration. They can even sell your pics to third party and use them in ads. Wood TV may have similar terms.

I started using Flickr since they upped the limit space and you can set copyright information for your pics.